Allegiance Rotary Burr SG-1 1/4 Inch (1/4 Inch Shank Solid Tungsten Carbide Pointed Tree Shape Double Cut 30000 Max RPM Weld Grinding V Cuts)

Allegiance SG-1 1/4-Inch Pointed Tree Solid Carbide Rotary Burr

The Allegiance SG-1 1/4-Inch Pointed Tree Solid Carbide Rotary Burr is a specialized rotary grinding and deburring bit engineered for cleaning out acute-angled corners, grinding narrow V-cuts, blending internal welded seams, and deburring complex metal geometries without binding in tight spaces. Rated for operational speeds up to 30,000 RPM on a standard 1/4-inch shank, this solid tungsten carbide bit features a pointed tree flame-like profile and double-cut cross-flute geometry that breaks material into fine chips to eliminate chatter. Outfitted with a 1/4-inch head diameter and a 5/8-inch length of cut across a 2-inch overall length, this 0.12-pound rotary tool accessory executes precision metal removal.

Best Used For:

• Acute-Angle & V-Groove Joint Grinding: Accessing narrow angled weld preparations and sharp interior corners to remove excess bead material.
• Complex Mold & Die Cavity Deburring: Removing sharp flash lines and burs from narrow recessed cavities in steel castings and machined parts.
• Engine Cylinder Head & Porting Modifications: Shaping and smoothing narrow internal runner transitions and curved port walls in automotive cylinder heads.

Key Performance & Safety Features

• Solid Tungsten Carbide Construction: Single-piece carbide formulation maintains cutting edge hardness under intense frictional heat.
• Pointed Tree (SG-1) Flame-Like Profile: Tapered tree geometry provides maximum clearance in narrow V-cuts, acute angles, and sharp fillets.
• Double-Cut Cross-Flute Design: Opposing cutting flutes produce granular metal chips to minimize tool chatter and deliver smooth surface finishes.
• 30,000 Maximum RPM Speed Rating: Precision-balanced construction accommodates pneumatic and electric 1/4-inch die grinders at full operating speed.
• Standard 1/4-Inch Steel Shank: Precision-ground shank inserts securely into standard 1/4-inch collets to eliminate rotational runout.
• Multi-Metal Substrate Compatibility: Cuts efficiently through structural steel, cast iron, stainless steel, brass, bronze, and aluminum.

What's Included

• (1) Allegiance SG-1 1/4-Inch Double Cut Pointed Tree Solid Carbide Burr

Technical Specifications

Pro-Tip: Guide the pointed tip lightly when working in narrow V-grooves; maintaining high die grinder speeds near 30,000 RPM without pushing hard prevents tip chipping and delivers smooth material removal in tight angles.